Add various type annotations

src/PIL/Image.py

@@ -506,7 +506,7 @@ def _getscaleoffset(expr):
 class SupportsGetData(Protocol):
     def getdata(
         self,
-    ) -> tuple[Transform, Sequence[Any]]: ...
+    ) -> tuple[Transform, Sequence[int]]: ...
 
 
 class Image:
@@ -1295,7 +1295,7 @@ def _crop(self, im, box):
         return im.crop((x0, y0, x1, y1))
 
     def draft(
-        self, mode: str, size: tuple[int, int]
+        self, mode: str | None, size: tuple[int, int]
     ) -> tuple[str, tuple[int, int, float, float]] | None:
         """
         Configures the image file loader so it returns a version of the
@@ -1719,7 +1719,7 @@ def entropy(self, mask=None, extrema=None):
 
     def paste(
         self,
-        im: Image | str | int | tuple[int, ...],
+        im: Image | str | float | tuple[int, ...],
         box: tuple[int, int, int, int] | tuple[int, int] | None = None,
         mask: Image | None = None,
     ) -> None:
@@ -1750,7 +1750,7 @@ def paste(
         See :py:meth:`~PIL.Image.Image.alpha_composite` if you want to
         combine images with respect to their alpha channels.
 
-        :param im: Source image or pixel value (integer or tuple).
+        :param im: Source image or pixel value (integer, float or tuple).
         :param box: An optional 4-tuple giving the region to paste into.
            If a 2-tuple is used instead, it's treated as the upper left
            corner.  If omitted or None, the source is pasted into the
@@ -2228,13 +2228,9 @@ def resize(
             msg = "reducing_gap must be 1.0 or greater"
             raise ValueError(msg)
 
-        size = cast("tuple[int, int]", tuple(size))
-
         self.load()
         if box is None:
             box = (0, 0) + self.size
-        else:
-            box = cast("tuple[float, float, float, float]", tuple(box))
 
         if self.size == size and box == (0, 0) + self.size:
             return self.copy()
@@ -2291,8 +2287,6 @@ def reduce(
 
         if box is None:
             box = (0, 0) + self.size
-        else:
-            box = cast("tuple[int, int, int, int]", tuple(box))
 
         if factor == (1, 1) and box == (0, 0) + self.size:
             return self.copy()
@@ -2692,7 +2686,9 @@ def round_aspect(number, key):
                 return
             size = preserved_size
 
-            res = self.draft(None, (size[0] * reducing_gap, size[1] * reducing_gap))  # type: ignore[arg-type]
+            res = self.draft(
+                None, (int(size[0] * reducing_gap), int(size[1] * reducing_gap))
+            )
             if res is not None:
                 box = res[1]
         if box is None:
@@ -2799,7 +2795,7 @@ def getdata(self):
         im.info = self.info.copy()
         if method == Transform.MESH:
             # list of quads
-            for box, quad in cast("Sequence[tuple[float, float]]", data):
+            for box, quad in data:
                 im.__transformer(
                     box, self, Transform.QUAD, quad, resample, fillcolor is None
                 )
@@ -2957,7 +2953,7 @@ def transform(
         self,
         size: tuple[int, int],
         image: Image,
-        **options: dict[str, str | int | tuple[int, ...] | list[int]] | int,
+        **options: str | int | tuple[int, ...] | list[int],
     ) -> Image:
         pass
 

src/PIL/ImageDraw.py

@@ -456,14 +456,12 @@ def draw_corners(pieslice) -> None:
                 self.draw.draw_rectangle(right, ink, 1)
 
     def _multiline_check(self, text: AnyStr) -> bool:
-        split_character = cast(AnyStr, "\n" if isinstance(text, str) else b"\n")
+        split_character = "\n" if isinstance(text, str) else b"\n"
 
         return split_character in text
 
     def _multiline_split(self, text: AnyStr) -> list[AnyStr]:
-        split_character = cast(AnyStr, "\n" if isinstance(text, str) else b"\n")
-
-        return text.split(split_character)
+        return text.split("\n" if isinstance(text, str) else b"\n")
 
     def _multiline_spacing(self, font, spacing, stroke_width):
         return (
@@ -477,7 +475,12 @@ def text(
         xy: tuple[float, float],
         text: str,
         fill=None,
-        font: ImageFont.FreeTypeFont | ImageFont.ImageFont | None = None,
+        font: (
+            ImageFont.ImageFont
+            | ImageFont.FreeTypeFont
+            | ImageFont.TransposedFont
+            | None
+        ) = None,
         anchor=None,
         spacing=4,
         align="left",
@@ -597,9 +600,14 @@ def draw_text(ink, stroke_width=0, stroke_offset=None) -> None:
     def multiline_text(
         self,
         xy: tuple[float, float],
-        text,
+        text: str,
         fill=None,
-        font=None,
+        font: (
+            ImageFont.ImageFont
+            | ImageFont.FreeTypeFont
+            | ImageFont.TransposedFont
+            | None
+        ) = None,
         anchor=None,
         spacing=4,
         align="left",
@@ -684,7 +692,12 @@ def multiline_text(
     def textlength(
         self,
         text: str,
-        font: ImageFont.FreeTypeFont | ImageFont.ImageFont | None = None,
+        font: (
+            ImageFont.ImageFont
+            | ImageFont.FreeTypeFont
+            | ImageFont.TransposedFont
+            | None
+        ) = None,
         direction=None,
         features=None,
         language=None,

src/PIL/ImageFont.py

@@ -33,11 +33,11 @@
 import warnings
 from enum import IntEnum
 from io import BytesIO
-from typing import TYPE_CHECKING, BinaryIO
+from typing import IO, TYPE_CHECKING, Any, BinaryIO
 
 from . import Image
 from ._typing import StrOrBytesPath
-from ._util import is_directory, is_path
+from ._util import is_path
 
 if TYPE_CHECKING:
     from . import ImageFile
@@ -61,7 +61,7 @@ class Layout(IntEnum):
     core = DeferredError.new(ex)
 
 
-def _string_length_check(text: str) -> None:
+def _string_length_check(text: str | bytes | bytearray) -> None:
     if MAX_STRING_LENGTH is not None and len(text) > MAX_STRING_LENGTH:
         msg = "too many characters in string"
         raise ValueError(msg)
@@ -113,7 +113,7 @@ def _load_pilfont(self, filename: str) -> None:
             self._load_pilfont_data(fp, image)
             image.close()
 
-    def _load_pilfont_data(self, file, image):
+    def _load_pilfont_data(self, file: IO[bytes], image: Image.Image) -> None:
         # read PILfont header
         if file.readline() != b"PILfont\n":
             msg = "Not a PILfont file"
@@ -161,7 +161,7 @@ def getmask(self, text, mode="", *args, **kwargs):
         return self.font.getmask(text, mode)
 
     def getbbox(
-        self, text: str, *args: object, **kwargs: object
+        self, text: str | bytes | bytearray, *args: Any, **kwargs: Any
     ) -> tuple[int, int, int, int]:
         """
         Returns bounding box (in pixels) of given text.
@@ -180,7 +180,9 @@ def getbbox(
         width, height = self.font.getsize(text)
         return 0, 0, width, height
 
-    def getlength(self, text: str, *args: object, **kwargs: object) -> int:
+    def getlength(
+        self, text: str | bytes | bytearray, *args: Any, **kwargs: Any
+    ) -> int:
         """
         Returns length (in pixels) of given text.
         This is the amount by which following text should be offset.
@@ -357,13 +359,13 @@ def getlength(
     def getbbox(
         self,
         text: str,
-        mode="",
-        direction=None,
-        features=None,
-        language=None,
-        stroke_width=0,
-        anchor=None,
-    ) -> tuple[int, int, int, int]:
+        mode: str = "",
+        direction: str | None = None,
+        features: str | None = None,
+        language: str | None = None,
+        stroke_width: float = 0,
+        anchor: str | None = None,
+    ) -> tuple[float, float, float, float]:
         """
         Returns bounding box (in pixels) of given text relative to given anchor
         when rendered in font with provided direction, features, and language.
@@ -513,7 +515,7 @@ def getmask(
 
     def getmask2(
         self,
-        text,
+        text: str,
         mode="",
         direction=None,
         features=None,
@@ -641,7 +643,7 @@ def font_variant(
             layout_engine=layout_engine or self.layout_engine,
         )
 
-    def get_variation_names(self):
+    def get_variation_names(self) -> list[bytes]:
         """
         :returns: A list of the named styles in a variation font.
         :exception OSError: If the font is not a variation font.
@@ -683,10 +685,11 @@ def get_variation_axes(self):
             msg = "FreeType 2.9.1 or greater is required"
             raise NotImplementedError(msg) from e
         for axis in axes:
-            axis["name"] = axis["name"].replace(b"\x00", b"")
+            if axis["name"]:
+                axis["name"] = axis["name"].replace(b"\x00", b"")
         return axes
 
-    def set_variation_by_axes(self, axes):
+    def set_variation_by_axes(self, axes: list[float]) -> None:
         """
         :param axes: A list of values for each axis.
         :exception OSError: If the font is not a variation font.
@@ -731,7 +734,7 @@ def getbbox(self, text, *args, **kwargs):
             return 0, 0, height, width
         return 0, 0, width, height
 
-    def getlength(self, text, *args, **kwargs):
+    def getlength(self, text: str, *args, **kwargs) -> float:
         if self.orientation in (Image.Transpose.ROTATE_90, Image.Transpose.ROTATE_270):
             msg = "text length is undefined for text rotated by 90 or 270 degrees"
             raise ValueError(msg)
@@ -878,15 +881,13 @@ def load_path(filename: str | bytes) -> ImageFont:
     :return: A font object.
     :exception OSError: If the file could not be read.
     """
+    if not isinstance(filename, str):
+        filename = filename.decode("utf-8")
     for directory in sys.path:
-        if is_directory(directory):
-            assert isinstance(directory, str)
-            if not isinstance(filename, str):
-                filename = filename.decode("utf-8")
-            try:
-                return load(os.path.join(directory, filename))
-            except OSError:
-                pass
+        try:
+            return load(os.path.join(directory, filename))
+        except OSError:
+            pass
     msg = "cannot find font file"
     raise OSError(msg)
 

src/PIL/JpegImagePlugin.py

@@ -425,7 +425,7 @@ def load_read(self, read_bytes: int) -> bytes:
         return s
 
     def draft(
-        self, mode: str, size: tuple[int, int]
+        self, mode: str | None, size: tuple[int, int]
     ) -> tuple[str, tuple[int, int, float, float]] | None:
         if len(self.tile) != 1:
             return None

src/PIL/_imaging.pyi

@@ -1,7 +1,5 @@
 from typing import Any
 
-from typing_extensions import Buffer
-
 class ImagingCore:
     def __getattr__(self, name: str) -> Any: ...
 
@@ -14,5 +12,5 @@ class ImagingDraw:
 class PixelAccess:
     def __getattr__(self, name: str) -> Any: ...
 
-def font(image, glyphdata: Buffer) -> ImagingFont: ...
+def font(image, glyphdata: bytes) -> ImagingFont: ...
 def __getattr__(name: str) -> Any: ...

src/PIL/_imagingft.pyi

@@ -1,5 +1,7 @@
 from typing import Any, TypedDict
 
+from . import _imaging
+
 class _Axis(TypedDict):
     minimum: int | None
     default: int | None
@@ -37,21 +39,28 @@ class Font:
         x_start=...,
         y_start=...,
         /,
-    ) -> tuple[Any, tuple[int, int]]: ...
+    ) -> tuple[_imaging.ImagingCore, tuple[int, int]]: ...
     def getsize(
-        self, string: str, mode=..., dir=..., features=..., lang=..., anchor=..., /
+        self,
+        string: str | bytes | bytearray,
+        mode=...,
+        dir=...,
+        features=...,
+        lang=...,
+        anchor=...,
+        /,
     ) -> tuple[tuple[int, int], tuple[int, int]]: ...
     def getlength(
         self, string: str, mode=..., dir=..., features=..., lang=..., /
-    ) -> int: ...
-    def getvarnames(self) -> list[str]: ...
-    def getvaraxes(self) -> list[_Axis]: ...
+    ) -> float: ...
+    def getvarnames(self) -> list[bytes]: ...
+    def getvaraxes(self) -> list[_Axis] | None: ...
     def setvarname(self, instance_index: int, /) -> None: ...
     def setvaraxes(self, axes: list[float], /) -> None: ...
 
 def getfont(
-    filename: str | bytes | bytearray,
-    size,
+    filename: str | bytes,
+    size: float,
     index=...,
     encoding=...,
     font_bytes=...,